Demonstration of a close genetic relationship between human and chimpanzee through the Nutall precipitation reaction Abstract Some scientists theorize that humans and chimpanzees evolved from a common ancestor millions of years ago. Because of this theory, we hypothesized that the chimpanzee blood proteins would most resemble human blood proteins. Three other vertebrates, the frog, cow, and monkey were also compared in this study. In order to test for similarities in various blood proteins, the Nutall Precipitation process was used.
The purpose of this experiment was to identify the specific element in a metal powder sample by determining its crystal structure and atomic radius.
These were determined using the Debye-Sherrer powder camera method of X-ray diffraction. A good introduction also provides whatever background theory, previous research, or formulas the reader needs to know. Usually, an instructor does not want you to repeat the lab manual, but to show your own comprehension of the problem.
If the amount of introductory material seems to be a lot, consider adding subheadings such as: Theoretical Principles or Background. Note on Verb Tense Introductions often create difficulties for students who struggle with keeping verb tenses straight.
These two Biology lab reports should help you navigate the introduction: The experiment is already finished. Use the past tense when talking about the experiment. Methods and Materials or Equipment can usually be a simple list, but make sure it is accurate and complete.
In some cases, you can simply direct the reader to a lab manual or standard procedure: Experimental Procedure describes the process in chronological order.
Using clear paragraph structure, explain all steps in the order they actually happened, not as they were supposed to happen. If your professor says you can simply state that you followed the procedure in the manual, be sure you still document occasions when you did not follow that exactly e.
Results are usually dominated by calculations, tables and figures; however, you still need to state all significant results explicitly in verbal form, for example: Graphics need to be clear, easily read, and well labeled e.
Input Frequency and Capacitor Value. In most cases, providing a sample calculation is sufficient in the report. Leave the remainder in an appendix. Likewise, your raw data can be placed in an appendix. Refer to appendices as necessary, pointing out trends and identifying special features.
Discussion is the most important part of your report, because here, you show that you understand the experiment beyond the simple level of completing it. By that, they mean this is what is not readily observable. Analysis What do the results indicate clearly?
What have you found? Explain what you know with certainty based on your results and draw conclusions: What is the significance of the results? What questions might we raise?
Find logical explanations for problems in the data: Since none of the samples reacted to the Silver foil test, therefore sulfide, if present at all, does not exceed a concentration of approximately 0.
It is therefore unlikely that the water main pipe break was the result of sulfide-induced corrosion. Although the water samples were received on 14 Augusttesting could not be started until 10 September It is normally desirably to test as quickly as possible after sampling in order to avoid potential sample contamination.
The effect of the delay is unknown. More particularly, focus your discussion with strategies like these: Compare expected results with those obtained. If there were differences, how can you account for them? Be specific; for example, the instruments could not measure precisely, the sample was not pure or was contaminated, or calculated values did not take account of friction.
Was it a result of equipment? If an experiment was within the tolerances, you can still account for the difference from the ideal. If the flaws result from the experimental design explain how the design might be improved.
Explain your results in terms of theoretical issues. Usually you will have discussed these in the introduction. In this section move from the results to the theory.Proper Citation Format. In Text Referencing. When paraphrasing information from a source, proper credit must be given to the author of that source using the Name-Year system.
A formal lab report is the principle way scientific data are conveyed to the rest of the scientific community and preserved for future examination. Each scientific journal has its own idiosyncrasies regarding particulars of the format, but the most common elements of a scientific report.
AP Biology Lab: Catalase (Enzymes) Abstract Enzymes Lab Report Inroduction In this lab we explore an enzymes activity and how it can be affected by changes to its environment. An enzyme is a protein and is a catalyst to chemical reactions. It helps accelerate reactions by lowering the activation energy, which is needed for reactions in.
The format for the entire lab report is summarized in the handout of laboratory requirements. This handout will use a lab exercise on seed germination as an example of how to write a methods section. Biology Research Paper Format California State University, Bakersfield Department of Biology v.
2/19/ With a title such as “A Biology Lab Report” the reader has no idea whether the work involved an animal, plant, or microorganism, or what was measured or tested.
The. What You Must Know About Sample Biology Lab Report An abstract is a concise section which outlines the entire paper. Your interpretation has to be initial and you’ll be able to publish from being specific to general and don’t prove or disprove your theory.